Chronomaster Aviator Sea Diver : this singular name refers to one of the most accomplished and original instrument-watches of the 1960s, combining an unmatched number of features and a timeless design.Created in 1961, this chronograph was produced for about ten years, under several brands, thanks to the partnership between the Swiss company NIVADA SA and the American company CROTON WATCH CO.This earned him to wear some of his dials probably the most complicated name in the history of watchmaking: CROTON NIVADA GRENCHEN Chronomaster Aviator Sea Diver.Thanks to a rigorous methodology specific to the authors, signature of the works «ONLY », this book reveals the incredible diversity of Chronomaster models. It is positioned both as an introductory book for the exceptional watch lover and as an introductory book for the collector. No doubt this legendary watch will find a deserved place among the most desirable chronographs of the 1960s.